288 PYEENOCARPEI [VERRUCARIA 



The thickish, sometimes orbicular thallus is limited and occasion- 

 ally intersected by the dark-coloured hypothaUus. 



Hab. On calcareous rocks. — Distr. Uncommon in W. and X. 

 England, W. Scotland and in S. and W. Ireland. — B. M. Houghton, 

 Gloucestershire; Buxton, Derbyshire; near Eievaulx and Newton 

 Wood, Cleveland, Yorkshire ; Craig Tnlloch, Perthshire ; I. of Lismore, 

 Argyll; Kenmare, Kerry; Dromoland, Clare. 



27. V. murina Leigh t. Angioc. Lich. p. 44, t. 19, fig. 3 

 (1851). — Thallus mouse-grey or brownish, thin, efiiise, continuous 

 and sKghtly pulverulent or occurring in spots and determinate. 

 Perithecia small, numerous, semi-immersed, prominent ; perithecial 

 wall thickish, black, entire; spores ellipsoid, 0,018-24 mm. long, 

 0,006-12 mm. thick. — Mudd Man. p. 291 ; Cromb. Lich. Brit, 

 p. 115 ; Leight. Lich. El. p. 42-5 ; ed. .3, p. 455. F. myriocarpa 

 Hepp Flecht. Eur. n. 430 (1857) ; Leight. Lich. M. ed. 3, p. 456. 



Eicsicc. Larb. Lich. HDb. n. 160 (as V. myriocarpa). 



Distingnished by the thin continuous thallus and numerous 

 almost superficial perithecia. Sometimes a black hypothallus forms 

 a line at the circumference. 



Sah. On rocks. — Distr. Eare in S. and K. England and in S. and 

 W. Ireland. — B. M. Gloucestershire; Hartlepool, Durham; Cleghan, 

 Connemara, Galway. 



Var. pusilla Ai-n. in Flora xlvii. p. 599 (1864).— Thallus 

 bluish-grey, thin, somewhat pulverulent. Perithecia as in the 

 species ; spores smaller, 0,012—15 mm. long, 0,005—6 mm. thick. — 

 Vernicaria fugax Deakin in Ann. & Mag. Nat. Hist. ser. 2, xiii. 

 p. 35 (1854). 



Hab. On calcareous rocks. — Distr. Rare in S.W. England. — 

 B. M. Torquay, Devon. 



28. V. pinguicula Massal. in Lotos vi. p. 80 (1856) ; emend. 

 Koerb. Parerg. p. 379 (1863). — ThaUus in determinate patches, 

 cartilaginous, continuous or finely cracked-areolate, umber-brown, 

 l imi ted by a dark line. Perithecia minute, hemispherical, 

 immersed, the apex only visible; spores ellipsoid, minute, 0,012 

 mm. long, 0,004 mm. thick. 



Described by Massalongo as having a deeply cracked thallus, 

 and redescribed as above by Koerber, who says (I. c.) that Massalongo's 

 description was incorrect. 



Sab. On calcareous rocks. — B. M. BUsdale, Yorkshire. 



29. V. peloclita Kyi. in Flora, Ix. p. 461 (1S77).— Thallus 

 grey or greyish-brown, thin, smooth, cracked-areolate, determinate. 

 Perithecia semi-immersed, becoming rather prominent ; perithecial 

 wall black, entire; spores oblong, rather small, 0,011-15 mm. 

 long, 0,005-6 mm. thick. — Cromb. in GreviUea vi. p. 114; 

 Leight. Lich. Fl. ed. 3, p. 452. 



